21007996

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{3499}}^1$

素因数の和:3601

約数の個数: 24

約数和(自身を含む): 39200000

約数和(自身を除く): 18192004

約数列:

[1, 2, 4, 19, 38, 76, 79, 158, 316, 1501, 3002, 3499, 6004, 6998, 13996, 66481, 132962, 265924, 276421, 552842, 1105684, 5251999, 10503998, 21007996]

約数ペア:

[(1, 21007996), (2, 10503998), (4, 5251999), (19, 1105684), (38, 552842), (76, 276421), (79, 265924), (158, 132962), (316, 66481), (1501, 13996), (3002, 6998), (3499, 6004)]